中国电机工程学报2026，Vol.46Issue(11)：4403-4415,中插4,14.DOI:10.13334/j.0258-8013.pcsee.250411
考虑安全运行边界的低压配电交直流组网控制策略及工程应用
Control Strategy and Engineering Application of Low-voltage Distribution AC-DC Network Considering Safe Operating Boundary
李洋 1王鹤 1何荣富 2杨小龙 2孟欣欣2
作者信息
- 1. 东北电力大学电气工程学院,吉林省 吉林市 132012
- 2. 国网冀北电力有限公司智能配电网中心,河北省 秦皇岛市 066000
- 折叠
摘要
Abstract
With the explosive growth of distributed power sources and the widespread integration of new DC loads,the imbalance of load rate in low-voltage power distribution area is prominent,which brings severe challenges to the safety and stability of distribution network.The paper proposes a load rate balancing control strategy applied to low-voltage interconnection substations,which fully considers the safe operation boundary and achieves cluster operation and load balancing regulation of multiple substations.Firstly,the flexible interconnection of AC/DC network architecture and typical operating modes are presented;Secondly,a power coordination control strategy is designed so as to achieve the balanced and independent distribution of the unbalanced power in the entire network;Further,taking into account the sudden increase in single unit high load power and conventional load superposition,this paper configures a VSC safe operation boundary to address the short-term heavy overload and even overcurrent tripping of distribution transformers caused by the increase in AC load.To achieve maximum load balancing of distribution transformer clusters under extreme unbalanced conditions,this study proposes an over limit power cycle sharing algorithm.Finally,the simulation verification and engineering practice results show that the control strategy presented in this paper could effectively solve the power imbalance problem in power distribution area and ensure the safety and stability of the system when the loads fluctuate significantly,which has great practical significance and promotion value.关键词
低压配电台区/柔性互联/协调控制/负载率均衡/安全运行边界Key words
low-voltage power distribution area/flexible interconnection/coordinated control/load rate balancing/safe operating boundary分类
信息技术与安全科学引用本文复制引用
李洋,王鹤,何荣富,杨小龙,孟欣欣..考虑安全运行边界的低压配电交直流组网控制策略及工程应用[J].中国电机工程学报,2026,46(11):4403-4415,中插4,14.
